diff --git a/cmd/cql/main.go b/cmd/cql/main.go
index de31d6109..634051e12 100644
--- a/cmd/cql/main.go
+++ b/cmd/cql/main.go
@@ -601,7 +601,7 @@ func main() {
 
 	// if web flag is enabled
 	if explorerAddr != "" || adapterAddr != "" {
-		fmt.Printf("Ctrl + C to stop explorer on %s and adapter on %s", explorerAddr, adapterAddr)
+		fmt.Printf("Ctrl + C to stop explorer on %s and adapter on %s\n", explorerAddr, adapterAddr)
 		<-utils.WaitForExit()
 		return
 	}
diff --git a/sqlchain/adapter/server.go b/sqlchain/adapter/server.go
index de1fb533f..4c0611e3a 100644
--- a/sqlchain/adapter/server.go
+++ b/sqlchain/adapter/server.go
@@ -47,7 +47,9 @@ func NewHTTPAdapter(listenAddr string, configFile string) (adapter *HTTPAdapter,
 		cfg.ListenAddr = listenAddr
 	}
 	// init server
-	handler := handlers.CORS()(api.GetRouter())
+	handler := handlers.CORS(
+		handlers.AllowedHeaders([]string{"Content-Type"}),
+	)(api.GetRouter())
 
 	adapter.server = &http.Server{
 		TLSConfig: cfg.TLSConfig,
diff --git a/sqlchain/observer/api.go b/sqlchain/observer/api.go
index cc20e7eb8..24a8ca4b2 100644
--- a/sqlchain/observer/api.go
+++ b/sqlchain/observer/api.go
@@ -715,7 +715,9 @@ func startAPI(service *Service, listenAddr string, version string) (server *http
 		WriteTimeout: apiTimeout * 10,
 		ReadTimeout:  apiTimeout,
 		IdleTimeout:  apiTimeout,
-		Handler:      handlers.CORS()(router),
+		Handler: handlers.CORS(
+			handlers.AllowedHeaders([]string{"Content-Type"}),
+		)(router),
 	}
 
 	go func() {